单词(1)
above abroad absence absent absolute absolutely
absorb abstract abundant abuse academic academy
accelerate acceleration accent accept acceptable
acceptance access accessory accident accidental
accommodate accommodation accompany accomplish
accord accordance accordingly account accumulate
accuracy accurate accuse accustom accustomed
ache achieve achievement acid acknowledge
acquaintance acquire acquisition acre across
act action active activity actor actress actual
actually acute ad adapt add addition additional
address adequate adjective adjust administration
admire admission admit adopt adult advance
advanced advantage adventure adverb advertise advertisement